US3572471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transport vehicle
Assignee: Cockerill SA
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Filing: 1968-07-26
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Granted: 1971-03-30
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Expires: 1988-07-26
Abstract
Abstract In a transport vehicle having a rigid frame and rollers rolling on a track there is provided, an automatic speed controlling means comprising a gear wheel whose rotation is controlled by an oscillating element having two jaws spaced apart from one another and cooperating respectively and alternately with the teeth of said gear wheel which is mounted on a shaft having on at least one end a friction roller rolling on said track and which is carried by a rocking component adapted to rock in respect of said rigid frame on any downwardly sloping part of said track to engage said friction roller with said track so as to slow the speed of travel of said vehicle along said sloping part. Alternatively, friction brakes may be provided which are applied by rocking movement of a vehicle component on a downwardly sloping track portion.
Inventors
- 👤 Ghislain Antonine Jea Martelee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:15
CPC Classifications
B; B61; B61B; B61B13/00; B61B13/04; B60; B60T; B60T7/00; B60T7/12; B60T7/126; B66; B66C; B66C7/00; B66C2700/00; B66C2700/01; B66C2700/012
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
130 words
Transport vehicle having a rigid frame, comprising rollers on said vehicle, a track for said rollers, an automatic speed controlling means for controlling the speed of said vehicle, said speed controlling means being a gear wheel, an oscillating element, two jaws on said oscillating element spaced apart from one another and alternately engaging elements on said gear wheel, a shaft for mounting said gear wheel, a friction roller for engagement with said track on at least one end of said shaft, a rocking component carrying said shaft and which is adapted to rock in respect of said rigid frame on any downwardly sloping part of said track so as to engage said friction roller with said track to slow speed of travel of said vehicle along said downwardly sloping part.
Claim 2
Dependent Claim
130 words
Transport vehicle having a rigid frame, comprising rollers on said vehicle, a track for said rollers, an automatic speed controlling means for controlling the speed of said vehicle, said speed controlling means being a gear wheel, an oscillating element, two jaws on said oscillating element spaced apart from one another and alternately engaging elements on said gear wheel, a shaft for mounting said gear wheel, a friction roller for engagement with said track on at least one end of said shaft, a rocking component carrying said shaft and which is adapted to rock in respect of said rigid frame on any downwardly sloping part of said track so as to engage said friction roller with said track to slow speed of travel of said vehicle along said downwardly sloping part.
Claim 3
Dependent Claim
62 words
Transport vehicle as claimed in claim 1, wherein said rocking component comprises a trolley having at least one roller and having in its upper part an extension orientable transversely to the frame of the vehicle and carrying at least one roller while the trolley has a guide slot member in which there moves a roller carried by the frame of the vehicle.
Claim 4
Dependent Claim
28 words
Transport vehicle as claimed in claim 2, wherein the roller of the orientable extension or wing and the friction roller are situated on either side of the trolley.
Claim 5
Dependent Claim
114 words
Transport vehicle as claimed in claim 3, in which a plane passing through the axis of the roller carried by said oriental extension and the axis of the roller carried by said oriental extension and the axis of the roller carried by the trolley and the plane passing through this latter axis and the axis of the friction roller form between them a dihedral angle slightly less than 180*, so that the friction roller is only supported on the rolling track when the vehicle is on a downward slope when the roller carried by the frame of the vehicle is brought forward of the vertical plane passing through the roller carried by the trolley.
Claim 6
Dependent Claim
32 words
Transport vehicle as claimed in claim 2, characterized in that the guide slot member of the trolley is situated below the rollers and disposed parallel to the direction of the rolling track.
Claim 7
Dependent Claim
27 words
Transport vehicle as claimed in claim 1, wherein the friction roller is situated towards the front of the vehicle in relation to the direction of forward travel.
Claim 8
Dependent Claim
60 words
Transport vehicle as claimed in claim 1, wherein the frame of the vehicle has, longitudinally, the from of a U or channel, whose two arms constitute two vertical uprights, rollers being fitted at the upper end of one upright while the other upright carries the roller moving in the guide slot of the trolley, and carries the said friction roller.
Claim 9
Dependent Claim
55 words
Transport vehicle as claimed in claim 7, wherein the two uprights of the frame of the vehicle are connected by side members fixed to components pivoting transversely on bearing members of the said uprights in such a way as to permit an alteration of the orientation of one upright in relation to the other upright.
Claim 10
Dependent Claim
69 words
Transport vehicle as claimed in claim 7, wherein the upright carrying the roller moving in the guide slot member of the trolley has an articulated arm supported on the outer face of the guide slot member by a roller carried by a shaft whose ends cooperate with a projection of the track so as to bring the roller of the upright of the vehicle forward in said guide slot.
Claim 11
Dependent Claim
39 words
Transport vehicle as claimed in claim 7, wherein the roller moving in the guide slot member of the trolley is mounted on the front upright of the frame of the vehicle in respect of the direction of forward travel.
Claim 12
Dependent Claim
17 words
Transport vehicle as claimed in claim 1, characterized in that the gear wheel is a pin gear.
Claim 13
Dependent Claim
23 words
Transport vehicle as claimed in claim 1, wherein the friction roller is a knurled roller fixed direct on the shaft of the wheel.
Claim 14
Dependent Claim
102 words
A transport vehicle having a frame, rollers carried by the frame, a track on which said rollers roll, said track including a downwardly inclined track portion, means for retarding the rotation of at least one of said rollers, means for selectively engaging said at least one roller with said track only when the vehicle is moving downwardly on said downwardly inclined track portion, said retarding means comprising a gear rotatable with said at least one roller, and oscillating escapement means having a pair of jaws alternately engageable with elements on said gear to retard the rotation of said at least one roller.
Claim 15
Dependent Claim
102 words
A transport vehicle having a frame, rollers carried by the frame, a track on which said rollers roll, said track including a downwardly inclined track portion, means for retarding the rotation of at least one of said rollers, means for selectively engaging said at least one roller with said track only when the vehicle is moving downwardly on said downwardly inclined track portion, said retarding means comprising a gear rotatable with said at least one roller, and oscillating escapement means having a pair of jaws alternately engageable with elements on said gear to retard the rotation of said at least one roller.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |